From the program "Get It Growing with the Lafayette Parish Master Gardeners" first broadcast on AOC Community Media on 12/1/2011.
Materials include 3 - 8' 2x4s; 3 - 10' (or longer) lengths of 1/2" PVC pipe; 12 - conduit clips; 1/2" screws; 2" screws; a roll of 6ml visquine; duct tape and binder clips or velcro.